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Attention: RHN Hosted will reach the end of its service life on July 31, 2017.
Customers will be required to migrate existing systems to Red Hat Subscription Management prior to this date.
Learn more here

Details

Updated thunderbird packages that fix several security bugs are now
available for Red Hat Enterprise Linux 4 and 5.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

Mozilla Thunderbird is a standalone mail and newsgroup client.

Several flaws were found in the way Thunderbird processed certain malformed
JavaScript code. A malicious HTML email message containing JavaScript code
could cause Thunderbird to crash or potentially execute arbitrary code as
the user running Thunderbird. JavaScript support is disabled by default in
Thunderbird; these issues are not exploitable unless the user has enabled
JavaScript. (CVE-2007-3089, CVE-2007-3734, CVE-2007-3735, CVE-2007-3736,
CVE-2007-3737, CVE-2007-3738)

Users of Thunderbird are advised to upgrade to these erratum packages,
which contain backported patches that correct these issues.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.